CVE-2026-84360
Published:October 12, 2026
Updated:October 13, 2026
Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the HTTP configuration mutation routes require RequireSecureSession, but /mcp and /mcp_message require only ordinary authentication before exposing nginx_config_add and nginx_config_modify. An OTP-enabled user with a normal JWT but no valid X-Secure-Session-ID can therefore create or modify Nginx configuration and trigger reload behavior through MCP, bypassing the intended step-up control. This issue is fixed in version 2.4.1.
Affected Packages
https://github.com/0xJacky/nginx-ui.git (GITHUB):
Affected version(s) =v2.4.0 <v2.4.1Fix Suggestion:
Update to version v2.4.1github.com/0xJacky/Nginx-UI (GO):
Affected version(s) >=v1.9.10-0.20260204031510-495cb4e71e9c <v1.9.10-0.20260703134738-0540f3ecf782Fix Suggestion:
Update to version v1.9.10-0.20260703134738-0540f3ecf782Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Authentication Bypass Using an Alternate Path or Channel